Pricingby GlyphClaude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows.
Ways to buy 7
| Way to buy | Input | Output | In / out per 1M | Cached | Vs list |
|---|---|---|---|---|---|
The lab's own API · cached $0.3 | $3 | $15 | $3 / $15List price | $0.3 | List price |
 AWS BedrockDefault region · cached $0.3 | $3 | $15 | $3 / $15Same as list | $0.3 | Same as list |
global · cached $0.3 | $3 | $15 | $3 / $15Same as list | $0.3 | Same as list |
| Claude Platform on AWS Default region · cached $0.3 | $3 | $15 | $3 / $15Same as list | $0.3 | Same as list |
global · cached $0.3 | $3 | $15 | $3 / $15Same as list | $0.3 | Same as list |
| AWS Bedrock eu-west-1 · cached $0.33 | $3.3 | $16.5 | $3.3 / $16.5+10% vs list | $0.33 | +10% vs list |
us-east5 · cached $0.33 | $3.3 | $16.5 | $3.3 / $16.5+10% vs list | $0.33 | +10% vs list |
USD per 1M tokens; batch $1.5 in, $7.5 out on the lab's API. Regions are separate routes.
Through a gateway
Your own numbers100M input and 20M output tokens a month: $600.00 direct.
Helicone$600.00+0%
Kong AI Gateway$600.00+0%
LiteLLM$600.00+0%
Neon AI Gateway$600.00+0%
Vercel AI Gateway$600.00+0%
Cloudflare AI Gateway$630.00+5%
Requesty$630.00+5%
Eden AI$633.00+5.5%
OpenRouter$633.00+5.5%
No published token fee: Martian Gateway, Portkey, TrueFoundry AI Gateway.
Related models
| In / out per 1M | Cheapest route | |||||||
|---|---|---|---|---|---|---|---|---|
Anthropic · 1M | $0.1 | $0.5 | $0.1 / $0.5 | $0.2 | 1M | Lab list price | · | Claude Haiku 5.5 is Anthropic's small, fast model for high-volume, cost-sensitive work such as summarization, subagents, and browser use. |
Anthropic · 1M | $2 | $10 | $2 / $10 | $4 | 1M | Lab list price | · | Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. |
Anthropic · 1M | $4 | $20 | $4 / $20 | $8 | 1M | Lab list price | · | Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5. |
Anthropic · 1M | $10 | $50 | $10 / $50 | $20 | 1M | Lab list price | · | Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual... |
OpenAI · 1.05MCheapest: $2 on OpenAI (flex) | $2 | $10 | $2 / $10 | $4 | 1.05M | $2 on OpenAI (flex) | · | GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series. |
Google · 1MCheapest: $2 on Google Gemini API (flex) | $2 | $10 | $2 / $10 | $4 | 1M | $2 on Google Gemini API (flex) | · | Gemini 4 Argon is Google's flagship reasoning model, built for complex software engineering, deep mathematical and scientific problem solving, and autonomous multi-step agents. |
OpenAI · 1.05MCheapest: $4 on OpenAI (flex) | $4 | $20 | $4 / $20100% | $8 | 1.05M | $4 on OpenAI (flex) | 100% | GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series. |
Qwen (Alibaba) · 1M | $2 | $6 | $2 / $6 | $3 | 1M | Lab list price | · | Qwen3.8 Max 0902 is an updated snapshot of Qwen3.8 Max from Alibaba's Qwen team. |
About Claude Sonnet 4.5
Takes text, image, files in and returns text. First listed Oct 1, 2025. Up to 64K output tokens. Blended price $6 per 1M tokens at 3 input to 1 output. Model id claude-sonnet-4-5.
Price history
List price since Oct 1, 2025, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.
Questions
How much does Claude Sonnet 4.5 cost?
$3 per million input tokens and $15 per million output tokens, with cached input at $0.3, or $1.5 and $7.5 through the Batch API.
What is the context window of Claude Sonnet 4.5?
1M tokens, with up to 64K tokens of output.
Where is Claude Sonnet 4.5 cheapest?
Of 7 routes tracked, AWS Bedrock is cheapest at $3 input and $15 output per million tokens.